[PD] starting automatically "read only" (Ubuntu 10.04)
muranyia at gmail.com
Fri Jun 11 23:22:45 CEST 2010
On Fri, Jun 11, 2010 at 11:03 AM, Ingo Scherzinger <ingo at miamiwave.com>wrote:
> >If the file's contents have to be preserved between sessions, it's
> >the "read only system" paradigm. (You may still be able to use an usb
> >for this purpose?)
> It's actually working fine writing edited data to the rw sda3 partition
> where some folders have been linked to.
> >If the file can be recreated with the same content at each startup, i'd
> >think about how to trick it to be on a temporary writable filesystem. I
> >suppose we cannot change the default path for this file, and i'm not sure
> >you can a have link in your read only filesystem (/home/ingo) pointing to
> >yet-to-be-created file on a temporary filesystem, but given the annoyance
> >factor of the problem, it may make sense to trick your whole /home/ingo
> >a temporary filesystem (from where of course you will be free to create
> >links to directories that reside on the read-only filesystem).
> I tried that already. I was mounting the entire /home/ingo folder to a
> That way I didn't have all files I needed available. All system settings
> seemd to be gone.
> After getting the data partition to auto mount -rw I made a link to the
> .ICEauthority file. Didn't help. Maybe mounting drives comes later in the
> upstart order. I should check that out.
Well, when you mount your whole home to a tmpfs you have to copy all those
needed files and system settings on it, and if you can, you have to save
them back to permanent storage before shutdown.
Automounting drives from fstab may happen sooner or later during startup,
but the system is surely capable of mounting and temp-filesystems from the
moment the kernel is alive, and you can make things happen at a given moment
in the boot order by adding it to the right place in /etc/init.d/
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